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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.springframework.security.web.csrf</a></div>
<h2 title="Class CsrfFilter" class="title">Class CsrfFilter</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.springframework.web.filter.GenericFilterBean</li>
<li>
<ul class="inheritance">
<li>org.springframework.web.filter.OncePerRequestFilter</li>
<li>
<ul class="inheritance">
<li>org.springframework.security.web.csrf.CsrfFilter</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code>javax.servlet.Filter</code>, <code>org.springframework.beans.factory.Aware</code>, <code>org.springframework.beans.factory.BeanNameAware</code>, <code>org.springframework.beans.factory.DisposableBean</code>, <code>org.springframework.beans.factory.InitializingBean</code>, <code>org.springframework.context.EnvironmentAware</code>, <code>org.springframework.core.env.EnvironmentCapable</code>, <code>org.springframework.web.context.ServletContextAware</code></dd>
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<pre>public final class <span class="typeNameLabel">CsrfFilter</span>
extends org.springframework.web.filter.OncePerRequestFilter</pre>
<div class="block"><p>
Applies
<a href="https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF)">CSRF</a>
protection using a synchronizer token pattern. Developers are required to ensure that
<a href="CsrfFilter.html" title="class in org.springframework.security.web.csrf"><code>CsrfFilter</code></a> is invoked for any request that allows state to change. Typically
this just means that they should ensure their web application follows proper REST
semantics (i.e. do not change state with the HTTP methods GET, HEAD, TRACE, OPTIONS).
</p>
<p>
Typically the <a href="CsrfTokenRepository.html" title="interface in org.springframework.security.web.csrf"><code>CsrfTokenRepository</code></a> implementation chooses to store the
<a href="CsrfToken.html" title="interface in org.springframework.security.web.csrf"><code>CsrfToken</code></a> in <code>HttpSession</code> with <a href="HttpSessionCsrfTokenRepository.html" title="class in org.springframework.security.web.csrf"><code>HttpSessionCsrfTokenRepository</code></a>
wrapped by a <a href="LazyCsrfTokenRepository.html" title="class in org.springframework.security.web.csrf"><code>LazyCsrfTokenRepository</code></a>. This is preferred to storing the token in
a cookie which can be modified by a client application.
</p></div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>3.2</dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static <a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher">RequestMatcher</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="CsrfFilter.html#DEFAULT_CSRF_MATCHER">DEFAULT_CSRF_MATCHER</a></span></code></th>
<td class="colLast">
<div class="block">The default <a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher"><code>RequestMatcher</code></a> that indicates if CSRF protection is required or
not.</div>
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<h3>Fields inherited from class&nbsp;org.springframework.web.filter.OncePerRequestFilter</h3>
<code>ALREADY_FILTERED_SUFFIX</code></li>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="CsrfFilter.html#%3Cinit%3E(org.springframework.security.web.csrf.CsrfTokenRepository)">CsrfFilter</a></span>&#8203;(<a href="CsrfTokenRepository.html" title="interface in org.springframework.security.web.csrf">CsrfTokenRepository</a>&nbsp;csrfTokenRepository)</code></th>
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<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="CsrfFilter.html#doFilterInternal(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse,javax.servlet.FilterChain)">doFilterInternal</a></span>&#8203;(javax.servlet.http.HttpServletRequest&nbsp;request,
javax.servlet.http.HttpServletResponse&nbsp;response,
javax.servlet.FilterChain&nbsp;filterChain)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="CsrfFilter.html#setAccessDeniedHandler(org.springframework.security.web.access.AccessDeniedHandler)">setAccessDeniedHandler</a></span>&#8203;(<a href="../access/AccessDeniedHandler.html" title="interface in org.springframework.security.web.access">AccessDeniedHandler</a>&nbsp;accessDeniedHandler)</code></th>
<td class="colLast">
<div class="block">Specifies a <a href="../access/AccessDeniedHandler.html" title="interface in org.springframework.security.web.access"><code>AccessDeniedHandler</code></a> that should be used when CSRF protection
fails.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="CsrfFilter.html#setRequireCsrfProtectionMatcher(org.springframework.security.web.util.matcher.RequestMatcher)">setRequireCsrfProtectionMatcher</a></span>&#8203;(<a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher">RequestMatcher</a>&nbsp;requireCsrfProtectionMatcher)</code></th>
<td class="colLast">
<div class="block">Specifies a <a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher"><code>RequestMatcher</code></a> that is used to determine if CSRF protection
should be applied.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="CsrfFilter.html#shouldNotFilter(javax.servlet.http.HttpServletRequest)">shouldNotFilter</a></span>&#8203;(javax.servlet.http.HttpServletRequest&nbsp;request)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="CsrfFilter.html#skipRequest(javax.servlet.http.HttpServletRequest)">skipRequest</a></span>&#8203;(javax.servlet.http.HttpServletRequest&nbsp;request)</code></th>
<td class="colLast">&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.springframework.web.filter.OncePerRequestFilter</h3>
<code>doFilter, doFilterNestedErrorDispatch, getAlreadyFilteredAttributeName, isAsyncDispatch, isAsyncStarted, shouldNotFilterAsyncDispatch, shouldNotFilterErrorDispatch</code></li>
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<h3>Methods inherited from class&nbsp;org.springframework.web.filter.GenericFilterBean</h3>
<code>addRequiredProperty, afterPropertiesSet, createEnvironment, destroy, getEnvironment, getFilterConfig, getFilterName, getServletContext, init, initBeanWrapper, initFilterBean, setBeanName, setEnvironment, setServletContext</code></li>
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<h4>DEFAULT_CSRF_MATCHER</h4>
<pre>public static final&nbsp;<a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher">RequestMatcher</a> DEFAULT_CSRF_MATCHER</pre>
<div class="block">The default <a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher"><code>RequestMatcher</code></a> that indicates if CSRF protection is required or
not. The default is to ignore GET, HEAD, TRACE, OPTIONS and process all other
requests.</div>
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<h4>CsrfFilter</h4>
<pre>public&nbsp;CsrfFilter&#8203;(<a href="CsrfTokenRepository.html" title="interface in org.springframework.security.web.csrf">CsrfTokenRepository</a>&nbsp;csrfTokenRepository)</pre>
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<h4>shouldNotFilter</h4>
<pre class="methodSignature">protected&nbsp;boolean&nbsp;shouldNotFilter&#8203;(javax.servlet.http.HttpServletRequest&nbsp;request)
                           throws javax.servlet.ServletException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>shouldNotFilter</code>&nbsp;in class&nbsp;<code>org.springframework.web.filter.OncePerRequestFilter</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>javax.servlet.ServletException</code></dd>
</dl>
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<a id="doFilterInternal(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse,javax.servlet.FilterChain)">

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<h4>doFilterInternal</h4>
<pre class="methodSignature">protected&nbsp;void&nbsp;doFilterInternal&#8203;(javax.servlet.http.HttpServletRequest&nbsp;request,
                                javax.servlet.http.HttpServletResponse&nbsp;response,
                                javax.servlet.FilterChain&nbsp;filterChain)
                         throws javax.servlet.ServletException,
                                java.io.IOException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>doFilterInternal</code>&nbsp;in class&nbsp;<code>org.springframework.web.filter.OncePerRequestFilter</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>javax.servlet.ServletException</code></dd>
<dd><code>java.io.IOException</code></dd>
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<h4>skipRequest</h4>
<pre class="methodSignature">public static&nbsp;void&nbsp;skipRequest&#8203;(javax.servlet.http.HttpServletRequest&nbsp;request)</pre>
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<h4>setRequireCsrfProtectionMatcher</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;setRequireCsrfProtectionMatcher&#8203;(<a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher">RequestMatcher</a>&nbsp;requireCsrfProtectionMatcher)</pre>
<div class="block">Specifies a <a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher"><code>RequestMatcher</code></a> that is used to determine if CSRF protection
should be applied. If the <a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher"><code>RequestMatcher</code></a> returns true for a given request,
then CSRF protection is applied.
<p>
The default is to apply CSRF protection for any HTTP method other than GET, HEAD,
TRACE, OPTIONS.
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>requireCsrfProtectionMatcher</code> - the <a href="../util/matcher/RequestMatcher.html" title="interface in org.springframework.security.web.util.matcher"><code>RequestMatcher</code></a> used to determine if
CSRF protection should be applied.</dd>
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<h4>setAccessDeniedHandler</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;setAccessDeniedHandler&#8203;(<a href="../access/AccessDeniedHandler.html" title="interface in org.springframework.security.web.access">AccessDeniedHandler</a>&nbsp;accessDeniedHandler)</pre>
<div class="block">Specifies a <a href="../access/AccessDeniedHandler.html" title="interface in org.springframework.security.web.access"><code>AccessDeniedHandler</code></a> that should be used when CSRF protection
fails.
<p>
The default is to use AccessDeniedHandlerImpl with no arguments.
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>accessDeniedHandler</code> - the <a href="../access/AccessDeniedHandler.html" title="interface in org.springframework.security.web.access"><code>AccessDeniedHandler</code></a> to use</dd>
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